The Big Bang problem of PMG5: an update
To come back to this issue affecting some PMG5 and apparently due to the a defective PSU; at least one of our readers has been experiencing the problem while the computer was installed in an optimal environment (ventilated, temperature and voltage controlled), leading to the conclusion that it is really a hardware problem and not due to any external factor.
AppleCenters responsible for taking care of those defect PMG5 have ordered 200 PSU (to be delivered on Feb 22nd); but it is already not enough to cover the currently 219 computers waiting for being repaired (only for Europe).
The problem should be solved quite quickly, since Apple has reserved 1000W PSU only for PMG5 Quad, and started using a 710W PSU for both PMG5 dualcore 2.0 and 2.3GHz models.